Home / 78,227,713.20-117,341,569.80-57,820,378.80

Finding the Fourth Proportional to 78,227,713.20, 117,341,569.80 and 57,820,378.80

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Solution

The fourth proportional to 78,227,713.20, 117,341,569.80 and 57,820,378.80 is: 86,730,568.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,227,713.20 : 117,341,569.80 = 57,820,378.80 : x
  2. Step 2: Convert to fraction form
    78,227,713.20/117,341,569.80 = 57,820,378.80/x
  3. Step 3: Cross multiply
    78,227,713.20x = 117,341,569.80 × 57,820,378.80
  4. Step 4: Simplify right side
    78,227,713.20x = 6,784,734,014,822,640
  5. Step 5: Solve for x
    x = 6,784,734,014,822,640/78,227,713.20
  6. Step 6: Final answer
    x = 86,730,568.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.